A bloodthirsty cohort of nocturnal creatures preying on you whilst you sleep may sound like the plot of a gothic horror novel, but it’s the truth if you’re living with a bed bug infestation. Bed bugs are tiny parasites – about the size of an apple seed once fully grown – that feed on the blood of humans and other mammals. They hide in the cracks, crevices and seams of beds and furniture making an infestation extremely difficult to get rid of without professional help.